一、什么是儲能變流器

儲能逆變器就是將交流電變換成直流電向蓄電池充電儲存，當斷電時再將蓄電池儲存的直流電變換成交流電供負載使用。儲能(neng)(neng)(neng)逆變器(qi)的主(zhu)要功能(neng)(neng)(neng)是(shi)實現交流(liu)電網(wang)電能(neng)(neng)(neng)與儲能(neng)(neng)(neng)電池(chi)電能(neng)(neng)(neng)之間的能(neng)(neng)(neng)量雙(shuang)向(xiang)傳(chuan)遞，也是(shi)一種雙(shuang)向(xiang)變流(liu)器(qi)，可(ke)以(yi)適配多種直流(liu)儲能(neng)(neng)(neng)單(dan)元，如超級電容器(qi)組、蓄電池(chi)組等(deng)。

二、什么是UPS

UPS全稱為Uninterrupted Power Supply，即不間斷電源，可在電網斷電或供電不穩定情況下，為通信、醫療、數據中心等對供電質量有特殊性要求的網絡系統提供穩定的電源保障。目前，市場上應用的UPS主(zhu)要分(fen)為以下幾種：

1、后備式UPS：市(shi)電(dian)(dian)輸入正(zheng)常時，UPS將(jiang)市(shi)電(dian)(dian)穩壓后供應給負(fu)載使用；當市(shi)電(dian)(dian)輸入超(chao)出(chu)正(zheng)常范圍（如(ru)市(shi)電(dian)(dian)中斷或頻率(lv)異(yi)常），UPS立(li)即(ji)將(jiang)蓄電(dian)(dian)池的直(zhi)流電(dian)(dian)能轉換成交流電(dian)(dian)能，向負(fu)載逆變供電(dian)(dian)。

2、在線互動式UPS：市(shi)(shi)電(dian)(dian)(dian)輸入正常(chang)時，由(you)市(shi)(shi)電(dian)(dian)(dian)為(wei)負載(zai)供(gong)電(dian)(dian)(dian)；當市(shi)(shi)電(dian)(dian)(dian)電(dian)(dian)(dian)壓或頻率異(yi)常(chang)時，由(you)UPS穩壓電(dian)(dian)(dian)路穩壓輸出(chu)為(wei)負載(zai)供(gong)電(dian)(dian)(dian)；當市(shi)(shi)電(dian)(dian)(dian)掉電(dian)(dian)(dian)時，則由(you)蓄(xu)電(dian)(dian)(dian)池逆變為(wei)負載(zai)供(gong)電(dian)(dian)(dian)。

3、在線式UPS：市電(dian)正常時，市電(dian)經整(zheng)流(liu)電(dian)路得到直流(liu)電(dian)壓，再逆變輸出為負載供(gong)電(dian)；市電(dian)掉電(dian)情況下，則(ze)由蓄電(dian)池逆變輸出交流(liu)電(dian)為負載供(gong)電(dian)。

三、儲能變流器和UPS的區別

UPS和儲能逆變器堪稱“同族兄(xiong)弟(di)”，都具有儲能基(ji)因，且(qie)都能為系統(tong)供電(dian)的可靠(kao)性提供有力保障。當然，它(ta)們之間也是(shi)有區別的，而且(qie)其最(zui)大差(cha)異就在(zai)應用端：UPS更多(duo)應用于數據存(cun)儲系統(tong)、醫院供電(dian)系統(tong)、科研等重要領域(yu)，并(bing)以(yi)電(dian)源備份(fen)的身份(fen)充(chong)當守護者(zhe)；儲能逆變器則主要在(zai)微(wei)電(dian)網、電(dian)網調峰填谷等方面大顯身手。

未來，儲(chu)能(neng)(neng)逆變的重要性(xing)，將(jiang)在(zai)移(yi)動能(neng)(neng)源、能(neng)(neng)源互聯等方面進一步凸(tu)顯。無論是UPS還是光伏儲(chu)能(neng)(neng)逆變器，都將(jiang)憑借各自特性(xing)在(zai)能(neng)(neng)源互聯發展中(zhong)占據(ju)一席之地(di)。